653221470 has 64 divisors (see below), whose sum is σ = 1721710080. Its totient is φ = 157296000.

The previous prime is 653221469. The next prime is 653221483. The reversal of 653221470 is 74122356.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43276 + ... + 56384.

It is an arithmetic number, because the mean of its divisors is an integer number (26901720).

Almost surely, 2^653221470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653221470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860855040).

653221470 is an abundant number, since it is smaller than the sum of its proper divisors (1068488610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

653221470 is a wasteful number, since it uses less digits than its factorization.

653221470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13281.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 653221470 is about 25558.1977064111. The cubic root of 653221470 is about 867.6678057674.

The spelling of 653221470 in words is "six hundred fifty-three million, two hundred twenty-one thousand, four hundred seventy".